Chapter 21 Quizzes: Self Activities Chapter Cum. Videos   Movies    Words   Appendix    Summary   Art    Art 

Unit 3: Genetics The Genetic Basis of Development Review
  1. Multicellular organisms develop from a single-celled to cells of many different types through cell , cell , and .
  2. Differences between cells is mainly due to differential gene , even though different cells share genomic .
  3. Some cells remain and can generate a whole organism.
  4. One technique for making of animals is nuclear , which has been used to clone mammals such as Dolly and Cat.
  5. Animal cloning needs to reverse changes such as of histones that affect gene in early development.
  6. Mammalian cells can be harvested from the stage during embryonic development, or from some adult tissues, and can differentiate into several types of specialized cells.
  7. Cell involves of genes for tissue-specific proteins, and leads to observable .
    • Cytoplasmic in the cytoplasm of the unfertilized egg regulate the expression of genes in the during embryonic development.
    • Signal molecules from embryonic cells may also cause transcriptional changes in nearby cells in a process called ; an example is the nematode Caenorhabditis elegans.
  8. Cell signaling is also involved in apoptosis. or cell death, which is essential for morphogenesis of digits as well as immune reponses in vertebrates.
bio1151b Home Mar 17, 2008 Print Print